Revert "VM: New calling convention for generated code."

runtime/vm/assembler_ia32.h

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #ifndef VM_ASSEMBLER_IA32_H_
 #define VM_ASSEMBLER_IA32_H_
 
 #ifndef VM_ASSEMBLER_H_
 #error Do not include assembler_ia32.h directly; use assembler.h instead.
 #endif
@@ skipping 287 matching lines @@
   DISALLOW_COPY_AND_ASSIGN(Label);
 };
 
 
 class Assembler : public ValueObject {
  public:
   explicit Assembler(bool use_far_branches = false)
       : buffer_(),
         prologue_offset_(-1),
         jit_cookie_(0),
-        comments_(),
-        code_(Code::ZoneHandle()) {
+        comments_() {
     // This mode is only needed and implemented for MIPS and ARM.
     ASSERT(!use_far_branches);
   }
   ~Assembler() { }
 
   static const bool kNearJump = true;
   static const bool kFarJump = false;
 
   /*
    * Emit Machine Instructions.
@@ skipping 631 matching lines @@
     if (Utils::IsPowerOfTwo(value) || Utils::IsPowerOfTwo(value + 1)) {
       return true;
     }
 
     return false;
   }
   static bool IsSafe(const Object& object) {
     return !object.IsSmi() || IsSafeSmi(object);
   }
 
-  void set_code_object(const Code& code) {
-    code_ ^= code.raw();
-  }
-
-  void PushCodeObject();
-
  private:
   class CodeComment : public ZoneAllocated {
    public:
     CodeComment(intptr_t pc_offset, const String& comment)
         : pc_offset_(pc_offset), comment_(comment) { }
 
     intptr_t pc_offset() const { return pc_offset_; }
     const String& comment() const { return comment_; }
 
    private:
@@ skipping 40 matching lines @@
                      FieldContent old_content);
   void UnverifiedStoreOldObject(const Address& dest, const Object& value);
 
   int32_t jit_cookie();
 
   AssemblerBuffer buffer_;
   ObjectPoolWrapper object_pool_wrapper_;
   intptr_t prologue_offset_;
   int32_t jit_cookie_;
   GrowableArray<CodeComment*> comments_;
-  Code& code_;
 
   DISALLOW_ALLOCATION();
   DISALLOW_COPY_AND_ASSIGN(Assembler);
 };
 
 
 inline void Assembler::EmitUint8(uint8_t value) {
   buffer_.Emit<uint8_t>(value);
 }
 
@@ skipping 19 matching lines @@
 }
 
 
 inline void Assembler::EmitOperandSizeOverride() {
   EmitUint8(0x66);
 }
 
 }  // namespace dart
 
 #endif  // VM_ASSEMBLER_IA32_H_